Opencv

1、显示摄像头图片

import cv2
cap = cv2.VideoCapture(0)


while True:
    success, img = cap.read()

    cv2.imshow("AI", img)
    cv2.waitKey(1)

2、在摄像头视频上加信息

import cv2
import time
cap = cv2.VideoCapture(0)
pTime = 0
while True:
    success, img = cap.read()
    imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)

    cTime = time.time()
    fps = 1 / (cTime - pTime)
    pTime = cTime
    cv2.putText(img, f'FPS:{int(fps)}', (20, 70), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)

    cv2.imshow("Test", img)
    cv2.waitKey(1)